. Author manuscript; available in PMC: 2013 Apr 21.

Published in final edited form as: Stat Med. 2011 Feb 22;31(7):606–618. doi: 10.1002/sim.4034

Table 3.

Different types of sham acupuncture based on needling and point selection

	Efficacy Studies	Effectiveness Studies	Other studies	Total
Non-insertion at non-acupuncture points	7 (20%)	6 (29%)	2 (15%)	15 (22%)
Non-insertion at true acupuncture points	4 (11%)	5 (24%)	2 (15%)	11 (16%)
Insertion (superficial) at non-acupuncture points	20 (58%)	10 (47%)	7 (55%)	37 (53%)
Insertion (superficial) at true acupuncture points	4 (11%)	0	2 (15%)	6 (9%)
Total	35 (100%)	21 (100%)	13 (100%)	69 (100%)